Intermittent strip feed mechanism of the reciprocating type



INVENTOR. Y ALBERT S. HOWELL A. S. HOWELL INTERMITTENT STRIP FEED MECHANISM OF THE RECIPROCATING TYPE Mm. ATTY.

Sept. 16, 1952 Filed Dec. 26, 1947 A. S. HOWELL INTERMITTENT STRIP FEED MECHANISM OF THE RECIPROCATING TYPE Filed Dec. 26, 1947 3 Sheets-Sheet 2 Sept. 16, 1952 5, HOWELL 2,610,543

INTERMITTENT STRIP FEED MECHANISM OF THE RECIPRQCATING TYPE 7 Filed Dec. 26, 1947 3 Sheets-Sheet 3 Fis. 7

INVENTOR. ALBERT S. HOWELL ATTY Patented Sept. 16, 1952 UNITED STATES PATENT OFFICE I INTERMITTENT STRIP FEED MECHANISM or THERECIPROCATING TYPE Albert S. Howell, Culver, Ind., assignor to Bell & Howell (lompany Chicago, 111., a corporation of Illinois Application December 26, 1947, Serial No. 793,836

"of the feed means connectedportion of the lever, which provides for engagement and disengagement of the toothed feed means of the mechanism with the usual feed perforations of a strip being fed in such a mannerthatwear on the feed tooth or teeth of the feed'means and the feed perforations of the strip and noise incident to such engagement and disengagement are materially reduced, which provides a desirable side guide bearing for the pivoted oscillating lever o'r levers of the mechanism, which provides for counterbalancing the reciprocating structure of the mechanism, which provides, preferably as .an operating adjustment, for-adjusting the extent of the reciprocatory strip feed and returnniovement of the toothed feed meansor shuttle to conform with the spacing of thefeed perforations of the strip and so accommodate for shrinkage or'expansion of the strip, and which provides, preferably as an operatingadjustment, for adjustment of the strip feed and return stroking range of the toothed feed means for framing.

Certain features of the. embodiment of the invention hereinafter described are-described and claimed in my co-pendingapplication for Letters Patent of the United States, Serial vNo. 762,748, filed July- 22, 1947, for improvement. in Intermittent. Strip. Feed Mechanism. 7 i

The, invention will be better understood by reference to the accompanying drawing inwhich- Figure 1-,is a'partialinterior" View" in rear. elevation: of a motion picture projecting machine embodyingpmy invention; V i i a Figure] is a partial sectional view taken 'substantially on "the: line12f--2 of Figure 1;

vFigure 3 is a partial, sectional view taken substantially on the lines-3: of'l 'igure 1;.

Figure 4 is a: partialisectional'. view takensubstantially on the line 4-4 of Figure 1; Figure 5 is1a perspective. 'viewiof one of-the parts. of the mechanism; hereinafter described;

23 Claims. (Cl. 88--18.4)

Figure 6 is a partial sectional view taken substantially on the line 6-43 of Figure 2;

Figure '7 is a vertically condensed perspective v view of the feed shuttle of the mechanism;

Figure 8 is a partial sectional view taken substantially on the line 88 of Figure 1 and showing the strip feed guide of the mechanism; and

Figure 9 is an exaggerated diagrammatic view showing the strip feeding action of my invention.

Referring to the drawing and particularly to Figurel, a frame part I is disposed vertically and transversely of the machine, and a horizontal forwardly extending shaft 2 is mounted for rotationon suitable bearings, not shown and which are carried with the frame part, and the shaft extends through the intermediate portion of a transversely extending recess 3 in the rear face of the frame part. See Figures 1 and 2. A toothed feed shuttle 5 is spaced transversely from the shaft 2 and is disposed at one end of the recess 3, and is mounted for vertical reciprocatory strip feed and return movement, as hereinafter more fully described.

Two substantially identical levers 5 and 6 of light truss construction are disposed within the recess 3, and extending horizontally and transversely of the axis of the shaft 2, have a pair of corresponding ends thereof in the region of the shuttle and the corresponding end of the recess,

'and have the other shuttle remote ends thereof disposed in the region of the shuttle remote end of the recess, the shaft 2 being disposed intermediate the ends of the levers. The levers 5 and -6 are coaxially pivotally mounted at the shuttle remote ends thereof for independent vertical movement and extend correspondingly from their pivotal axis in overlying relation, and the pivotal mounting of the levers comprises as follows:

A vertically extending bearing block 'I is dis posed within the recess 3 at the shuttle remote end thereof, and is mounted on the frame part I for vertical adjustment by means of headed screw studs 8passing through vertical slots 9 through the bearing block and screwthreaded into the frame part I, the bearing block being conveniently so adjustable by suitable mechanism 'comprising'a' shaft] l pivotally mounted on the frame part and provided with an eccentricpcrtionjli rotatably and slidably engaged in a horizontal slot 13 in the bearing block. See Figures 1 and 6.

A bearing stud M extends correspondingly with the movement planes of the levers 5 and 6 and transversely of the reciprocatory strip feed and return path of the shuttle 4, see Figures 2 and 6, and is slidably mounted for corresponding adjustment in a bore I5 through the vertically intermediate portion of the bearing block 1, this stud being convenientl so adjustable by a suitable mechanis comprising a shaft i6 pivotally mounted on the frame part I and provided with an eccentric portion ll rotatably and slidably engaged in a vertical slot IS in the stud, it being observed that the stud is vertically adjustable with the bearing block I and is adjustable independently of the bearing block corresponding with the movement plane of the levers 5 and 6 and transversely of the reciprocatory path of the shuttle 4.

The major portion 13 of the stud I4 is of elongated rectangular cross section having its greater dimension disposed horizontally and this portion is slidably engaged in a correspondingly shaped portion 2| of the bore 15 to prevent rotation of the stud On its axis. The stud portion [9 includes the end portion 22 of the stud which is directed toward the shuttle 4, and this end portion projects from the bearing block I and has its upper and lower surfaces convexly curved lineally of the stud as best shown in Figure 6 to constitute of the portion 22 a bearing member establishing a pivotal axis for the levers 5 and 6.

The pivotally mounted end portion of each of the levers 5 and 5 is provided with a bearing slot 23 extending radially of each lever and transversely of the reciprocatory path of the shuttle 4, and this slot of each lever embraces the bearing member 22 for pivotal and radial movement of each lever on the bearing member 22, the bearing slot of each lever constituting a linear bearing member having bearing engagement with the bearing member 22 longitudinally of the reciprocatory path of the shuttle to correspondingly pivotally confine each lever and to permit relative movement between each lever and the bearing member 22 radially of each lever and transversely of the reciprocatory path of the shuttle.

The vertical face of the bearing block I which faces the levers 5 and 6 is provided with two parallel vertically extending bearing grooves 24, the bottom surfaces 25 of which constitute rectilinear bearing members extending in the same vertical plane and longitudinally of the reciprocatory path of the shuttle. The shuttle remote ends of the levers 5 and 6 respectively extend in the grooves 24, and the end surfaces 26 of the shuttle remote ends of the levers constitute linear bearing members having bearing engagement with the bearing members 25 and extend and have lineally of the reciprocatory path of the shuttle a convex substantially arcuate form having its axis at the shuttle adjacent ends of the levers of which the shuttle adjacent end of the lever 5 is connected with the shuttle, as hereinafter described, for reciprocating the shuttle with oscillation of this lever, the bearing members 25 and 28, as shown, being desirably disposed at the shuttle remote ends of the levers and adjacent the bearing members 22 and 23, and the bearing members 22 and 23 are disposed intermediate the lineal extent of the bearing members 25 and 26 so that that these latter bearing members engage on opposite sides of the bearing members 22 and 23 as the levers are oscillated, the bearing mem bers 26 rocking on the bearing members 25 as is evident in Figure 6.

particularly Figure 2. Push rods 31 have washers 32 secured at corresponding ends thereof and these heads are respectively slidably engaged in the bores 29 of the stud 21. The other ends of the push rods are pointed and are respectively engaged in grooves 33 at the ends of the lever openings 28 adjacent the shuttle remote ends of the levers 5 and 6. Compression springs 34 are respectively disposed in the bores 29 and, oppositely engaging the bottoms of these bores and the washers 32, urge the push rods 3| and consequently the levers radially of said levers and transversely of the reciprocatory path of the shuttle 4 and toward the bearing block I to maintain the bearing members 25 and 26 in engagement.

As the levers 5 and 6 are oscillated, they pivot on the bearing member 22 which establishes the pivotal axis of the levers, and the bearing members 23, which are slidably and pivotally engaged on the bearing member 22, permits the bearing members 25 and 26 to control the radial positioning of the levers, and the bearing members 25 and 26 are so formed that in cooperation with the bearing members 22 and 23, they effect a desirable rectilinear reciprocation of the toothed feed means or shuttl connected portion of. the lever 5 and the corresponding portion of the lever 6.

The shuttle remote ends of the levers 5 and B are positioned normal to the movementplane thereof in adjacently spaced relation by th sides of the grooves 24, and are similarly positioned at portions thereof remote from their pivotal axis, see Figures 1 and 2, by three parallel longitudinally tensioned wire-like bearing members 35 extending vertically in correspondence with the movement of the levers and respectively disposed on the outsides of and between the levers, so that each lever is disposed between two of these hearing members and has bearing engagement therewith, the bearing members 35 being positioned and longitudinally tensioned by vertically spaced tensioning devices 36 common to these bearings members and mounted on the frame plate I and secured with opposite ends of the bearing members 35 and tensioning the same.

Each of the levers 5 and 6 is provided with an intermediate opening 31 through which the shaft 2 extends, and two radial cams 38 and 39 are fixedon the shaft 2 for rotation therewith and are respectively disposed in the openings 31 of the levers and are respectively engaged between vertically spaced parallel opposing slide bearing surfaces 4| of the lever openings 31, which bearing surfaces extend radially of the levers, for oscillating the levers with rotation of the cams and shaft, the cams 38 and 39 corresponding in contour and being timed in diametrically opposite relation so that the levers 5 and 6 are oscillated in timed opposite movement phase relation with the result that the lever 6 acts as a counterbalance with reference to the lever 5 and the shuttle 4, the levers 5 and 6 being preferably substantially identical with resulting substantially identical weight distribution and being coaxially pivotally mounted, and the cams 38 and 39 having identical lifts and being identically operative on the levers. However, additional weight 42, see Figure 1, may be added to the counterbalancing lever 6 at the shuttle adjacent end thereof to more fully counterbalance the lever 5 and shuttle 4.

.A verticallyv extending strip feed guide is carried with and arranged forwardly of the frame-part I in the regio as shown, is of the same construction askthatde- "scribed and claimed in my cos-pending applicaof the shuttled, and

tion for United States Letters Patent, Serial No.

-- 762,-'i4v, filed July 22, 1947, for improvement in Strip Feed Guide, and also embodies structure described and claimed in United States Letters Patent-No. 2,374,486, granted April 24, 1945, .on

my application for improvement in Strip Feed Guide, and will now be described briefly. See

Figure '8.

Two series of transversely spaced laterally flexible wire-likelongitudinally tensioned guide members 43 and 44 extend longitudinally of the guide and are adjacently spaced facewise of the guide to facewise guidea feed perforated motion picture film strip 45 therebetween. Each series of guide members comprises two widely spaced pairs of adjacently spaced guide members adapted to engage respective .of marginal portions of the guide is so related with a light aperture 48,

see Figure 1, through the frame part I and disposed upwardly from the shuttle adjacent ends of the levers 5 and 6, that the intermediate picture record portion 49. of the strip passes the alight, aperture for theprojection of light thereqpositezthe feedperforated portion of the strip having the feed perforations 46. SeeFigures 1 and.8. The bearing member 5I is carried by'the frame part I by suitable mounts at its upper and lower ends which longitudinally tension the same, these mounts being fully described in my said co pending application, Serial No. 762,748, {and oneof which is shown at 5 2 in Figure v1.

I is --,The lower portion of the bearing member 5| extends in a rearwardly facing groove 53 in the frame plate I and this groove communicates with the-recess 3. The upper portion of the front surface of the frame :plate I, see Figure 3, is offset rearwardly from the lower portion thereof to form a horizontal portion 54 immediately above .the recess 3, and the bearing member 5I extends upwardly from the groove 53 through arelatively la ge vertical bore 55 through the portion 54, and

{has its upper portion extending in front of the :f rame plate, the bearing member 51 extending in coaxial relation with this bore.

The feed shuttle 4 is of, elongated tubular form andof relatively small diameter and has its bore 55 engaged on the longitudinally tensioned bearing member 5I between the bearing member mounts for vertical reciprocating strip feed and r turn m m nt of the e d s u l on itu inally ofthe guided fi lm strip 45 andfor oscillatony, strip perforation engaging and disengaging movement of the feed shuttle along andabout thebear-ing member 5| which defines an axis exe d n n i ud nal y of the ui ed fil s p and, e lies ehtlrshased iaqswis o the gu ded film .it is oscillable.

strip-anddisposed sub tantiall'y opn slte the IS perforatedportion of the strip and al ne which thefeedshuttle is reciprocable and about which S Fi ur s 1, :2, 3 and The shuttle v4| extends throughthe elatirelv large bore through the horizontal imm nart portion 54 and upwar ly and d wnwardly the efrom, and the upper portion of thefeed shuttle above the bore 55 is provided with .3 v11 1 19411 5'Q fee teeth 51' spaced lon itud nally thereof in correspondence with thesnaoing of the feed er- .forations 46 cf the film strip and extending correspondingly radially ,ofthe feedshuttle, and th s feed teeth are adapted for desirable strip perforation engaging and disengaging-movemen with oscillatory movement of theshuttle on axis in an :arcuate path extendng predominately edge- .Wise f t e strip as best shownrin .Eieure 18, th y iofeed perforation disen a ed and enga ed Positions of the shuttle teeth 51 b in rshownarespectiyely in v,iull and dotted lines .in this --fi u The width of the shuttle teeth 5.! lon itudinally ,of the filmgstrip in the guide is less than th corr p n in wi h of the feed p rforation 1450f thefilm strip as is usual. 1

The lower portion of the feed shuttle below the bore 55 and within the groove 53 is provided-with va screwthreaded portion 58 disposed concentri- ,cally of the ,shuttlehQ e 56 and thus concentrically of the shuttle axis, and the lower end portion of theshuttle is of square externalcross section as designated at 59 to provide a square slide bearing extending longitudinallyof th shuttle. SceparticularlyFigures 3,.4 and 7.

A suitable packing device Ellis disposed-in the .bore .55 and surrounds and engages theintermediate portion of the shuttle between the upper feed toothed portion and the lower screwthread and squared po i ns thereof to prevent lubricant from Working upwardly on the shuttle to the upper feedtoothed portion thereof where .it might otherwise contactathe film strip 45in the feed guide.

A connectin ,member ;6-I is provided withta screwthreaded bore 62 through which the feed shuttle .4 passes and with which the. threaded shuttle portion 58 is threadedly engaged .to effect relative movement between theconneoting memher and feed shuttle longitudinally of the shuttle axis or longitudinally .of the reciprocatorystrip feed and return movement of the shuttle with angular movement of theshuttle on the shuttle axis. See Figures 1, 2and 3. --A bearing stud 63 is formed on the connecting member BI and extends radially of the axis of the bore ,62 and is engaged for pivotal movement in a bore 64 through the shuttle adjacent end of the lever .5 and parallelto the pivotal axis of the lever, so that oscillation .of this lever by rotation of the cam 38 efiectsreciprocatory strip feed and return movement. of the shuttle along the bearing member 51, the rectilinear reciprocatin movement ofthe shuttle adjacent end of this lever permitting the lever and shuttle to be merely pivotally connected. Angular movement of the connecting memberfil on the axis of the shuttle is prevented by engagement of the stud 63 in the bore 64 and by a vertical surface 65 on the connecting member bearing against the opposing face of the lever 5.

An elongated connecting member 56, see Figures 1, 3, 4 and 5.11s mounted within the recess 3 for longitudinal reciprocation transversely of th shuttle axis. and c r espon i g with the pl nes of m vement i; the levers. 5 and 6 by meansof headed screw studs 6lpassing through slots 68 through themember 66 and spaced and extending longitudinally thereof, and screwthreaded into the frame plate I. A crank member 69 of circular form throughout the major angular extent thereof is engaged for pivotalmovement in a horizontal semicircular slot '10 in the frame plate l and extending aboutthe groove 53 in coaxial relation with the bearing member and the shuttle 4 so that the crank member is angularly movable on and fixed longitudinally of the shuttle axis. The crank member is provided with a square axial bore H in which the lower square portion 59 of the shuttle is angularly fixed and slidable longitudinally of the shuttle axis. Thus, the shuttle is free to reciprocate longitudinally of its axis independently of the crank member 69, while angular oscillation of the crank member effects film perforation engaging and disengaging movement of the shuttle on its axis.

The crank member 69 is provided'with a crank 'pin 12 which is pivotally and slidably engaged in a transverse slot 13 in the connecting member 66 so that longitudinal reciprocation of this connecting member effects oscillation of the crank member to engage and disengage the feed teeth 51 of the shuttle with the feed perforations 46 of the film strip 45. A third radial cam 14 is fixed on the shaft 2 and consequently is fixed with the cams 38 and 39 for rotation therewith, and the connecting member 66 is provided with two parallel vertical extensions 15 between which th cam 14 is engaged so that rotation of this cam effects oscillation of the shuttle 4- on its axis to engage and disengage the feed teeth 5lof the shuttle with the feed perforations 46 of the film strip and by means of thescrewthread connection 58-.62 effects reciprocation of the shuttle longitudinally of its axis simultaneously with oscillation of the shuttle on its axis to engage anddisengag the film strip.

The cams 38 and '14 are so timed that intermittent feed of the film strip in the guide is effected with rotation of these earns, the cam 38 and the cam 14 in cooperation with the screwthread connection 58-452 effecting reciprocatory strip feed and return movement of the shuttle longitudi- -nally of its axis slightly in excess of the feed spacing of the feed perforations 46 of the film strip 45, the cam 38 effecting the major. portion of the reciprocatory strip feed and return movement of the shuttle substantially corresponding in extent with the feed spacing of the feed perforations of the film strip, and the cam 14 simultaneously effecting oscillatory strip perforation engaging and disengaging movement of the .shuttle on its axis and additional reciprocatory strip feed and return movement of th shuttle longitudinally of its axis in excess of said major portion of this movement, it being observedthat the connection between the lever 5 comprises the screwthread connection 58-62 so that the lever 5 and this connection are operative on the shuttle inseries. m

With rotation of the shaft 2 and cams 38,--39 and '14 in the proper direction, counterclockwise in Figure 1, the cam 74 in cooperation with the screwthread connection 58-62 elfectsthe initial portions of the strip feed and return movements of the shuttle after which the cam 38 effects the major portion of these movements, and the resultant feeding action is as follows: a s

Referring to Figure 9, the parallelogram 16 indicates the strip feeding cycle ofthe feed shuttle 4, the arrows associated with the sides of theparallelogram indicate the directions of movement of the shuttle, the parallelogram sides I1, 18, 19 and 8! indicate respectively the major portion of the strip feed movement, the simultaneous strip disengaging and initial return movement, the major portion of the return movement, and the simultaneous strip engaging and initial feed vmovement of the feed shuttle 4, and. the shuttle and film strip views 82, 83, 84 and 85 respectively adjacent the parallelogram corners indicate the relative positions of a feed tooth 51 of the shuttle and a feed perforation 46 of .the film strip at these corners, the shuttle movements .11 and 19 being effected by the cam 38 and the shuttle movements 18 and 8| being effected by the cam 14 in cooperation with the screwthread connection 5862.

The feed of the film strip 45 is downwardly in Figure 9, and at the termination of the downward strip engaged feed movement 11 of the shuttle, see view 82 of Figure 9, the shuttle tooth 51 is engaged in a strip perforation 46 and against the driven or lower edge 86 of the stripperforation. Following the shuttle movement, I1, the shuttle movement 18 takes place and simultaneously disengages the shuttle tooth 5'! from'the strip perforation 46 and initiates the upward return movement of the shuttle so that the shuttle tooth is lifted from engagement against the perforatio edge 36 during the perforation disengag- -ing movement with the result, that rubbing of the shuttle tooth on the perforation edge and consequent wear on the shuttle tooth and perforation edges and noise is at least materially reduced. View 83 of Figure 9 shows the relative positions of the shuttle and feed perforation at the completion of the movement'lB, the shuttle tooth being disengaged from the film perforation and positioned upwardly from the perforation edge 86.

Following the shuttle movement 18, the shuttle movement 19 takes place during which the major portion of the upward return movement of the shuttle is effected, and at the termination of the movement 19 the shuttle tooth 5'! is positioned opposite a succeeding strip perforation, 46A in disengaged relation therewith and positioned upwardly from the driven or lower edge 86A of this perforation as shown in view 84 of Figure 9. F01- of the shuttle so that the shuttle tooth is lowered downwardly into engagement against the perforation edge 86A. during the perforation engaging movement with the result that rubbing of the shuttle tooth on'the perforation edge and consequent wear on the shuttle tooth and perforation edge and noise is at least materially reduced. View 85 of Figure 9 shows the relative positions of the shuttle tooth and feed perforation 46A at the completion of the movement 8|, the shuttle tooth being engaged with the strip perforation andengaged downwardly against the perforation edge 86A. Following the shuttlemovement 8|, the shuttle movement l! takes place during which the major portion of the downward feed movement of the shuttle is effected and the shuttle tooth being engaged with a strip perforation,

the film strip is-fed downwardly. At the terminaperforationsof the strip.

gamma ment cycle of the shuttle having been completed and the strip fed the feed spacing of the feed Observing that the cam- 38 and. the cam 14 in cooperation with the screwthread connection 58 62 cooperate in effecting-- the reciprocatory film feed and return movement of the feed shuttle 4 and that they are operative in series on the feed'shuttle, the cam 38 and its connection with the shuttle constitutes a high velocity means- 14 and its connection with the feed shuttle comprising the screwthread connection 58-6Z constitutes a low velocity means effecting the initial portions of the feed and return movements of the feed shuttle at a desirable low velocity with a view toward reduction of wear on the shuttle tooth and feed perforations of the film stripand noise, this action being particularly desirable at the initiation of the feed movement of the feed shuttle where the shuttle tooth is engaged against the driven edge of the feed perforation of the film strip preparatory to feeding the film strip. Obviously, the several teeth 510i the feed shuttle 4 function in the same manner as does the shuttle tooth 51 of' Figure 9.

Recalling that the bearing block 1 and the framing the pictures on the'film strip 45 withthe light aperture'48, and recalling. that the.

stud I4 of which the bearing member'22 forms a part is adjustable with respect to the-bearing block T correspondingly with I the movement planes of the levers, 5 and 6' and transversely-of the reciprocatory. strip'feed and return path of the feedfshuttle', this adjustment provides cor-- responding adjustment of the pivotal. axisof the,

levers 5 and 6 and consequent adjustment of the extent of the reciprocatory' stri'p feed and return movement of the feed shuttle and so accommodates for shrinkage or expansion of the strip 45'. It willbe observed that the hereinbefore described adjustments of the bearing member 22 are correspondingly effective onthe-levers 5 and .6 so that these adjustmentsdo not alter the 'counterbalancing action; of the lever 6.

While I have thus described my invention, 1

do 1 notwishto be limited to the: precise details described as changes may be readily made without departing fromthe spirit of my invention, but having thus described my invention, I claimas new and desire to secure by Letters Patent the following 1. .In an intermittent strip feed mechanism, the combination of toothed strip feed means, a lever mounted for pivotal movement and connected With-said feed means for efiecting reciprocatory stripfeed and return movement of said feed means with oscillation of said lever, means for oscillating-said lever, and the pivotal mounting of said lever comprising a first bearingmeans establishing a pivotal axis spaced transversely from the reciprocatory path of said feed means and operative onsaid lever longitudinally of the reciprocatory path of said feedmeans tocorrespondingly pivotally confine said lever and to permit relative movement between said lever and pivotal axis radially of said lever and transversely of said reciprocatory path and a second bearing means operative on said lever radially of said lever and transversely of said reciprocatory path to correspondingly confine said lever and to permit pivotal movement of said lever on said pivotal axis and operative in cooperation with said first bearingmeans to eifect substantially rectilinear reciprocation of the feed means connected portion of said lever;

21 In an intermittent strip feed mechanism, the combination of toothed strip feed means, a lever mounted for pivotal movement and connected with said feed means for effecting rec'iprocatory strip feed and return movement of said feed means withoscillation of said lever, means for oscillating said lever, and the pivotal mounting of said lever comprising a pivotal first bearing member establishing a pivotal axis spaced transverselyfrom the reciprocatory path of said feed means, a linear second bearing member on said lever and extending radially of said lever and transversely of said reciprocatory path and having bearing engagement with said first bearing' member longitudinally of said reciprocatory path to correspondingly pivotally confine said lever and to permit relative movement between said lever and first bearing member radially of said lever and transversely of said reciprocatory path, a third bearing member on said lever, and a fourth bearing member having bearing engagement with said third bearing member radially of said lever and transversely'of said reciprocatory path to correspondingly confine said lever and to permit pivotal movement of said lever on said, pivotal axis and at least one of said third and fourth bearing members being linear. and

extending and having a form lineally of said reciproca'tory path operative onthe other of said third and fourth bearing'members to effect substantially rectilinear reciprocation of the feed means connected portion of said lever.

3. In an intermittent strip feed mechanism, the combination of toothed strip feedmeans, a lever mounted for pivotal movement and connected with said feed means for effecting reciprocatory'strip feed and return movement of said feed means with oscillation of said lever, means for oscillating said lever, and the pivotal mounting of said lever comprising a pivotal first bearing member establishing a pivotal axis spaced transversely from the reciprocatory path of said feed means, a linear second bearing-member on said lever and extending radially of said lever and transversely of said reciprocatory path and having bearing engagement with said first bearing member longitudinally of said reciprocatory path to correspondingly pivotally confine said lever and to permit relative movement between said lever and first bearing member radially of said lever and transversely of said reciprocatory path, a linear third bearing member on said lever in the form of a bearing surface extending and having lineally of said reciprocatory path a convex substantiallyarcuate form having its axis at the feed means connected portion of. said lever, a rectilinear fourth bearing member in the form of a bearing surface extending lineally of said reciprocatory pathand having bearing engagement with said third bearing member radially of said lever and transversely of said reciprocatory path, and means operative on said lever radially of said lever and transversely of said reciprocatory path to maintain said third and fourth bearing members in engagement. 7

4. In an intermittent strip feed mechanism, the combination of toothed strip feed means, a lever mounted for pivotal movement and connected at one end thereofwith said iced means for effecting reciprocatory strip-feed and return movement of said feed means with oscillation of said lever, a rotatory cam operative on the intermediate portionof said lever for oscillating the same, and the pivotal mounting of said lever comprising a pivotal first bearing member establishing a pivotal axis in the region of the feed means remote end of said lever, a linear second bearing member on said lever at the feed means remote end portion thereof and comprising a slot extending radially of said lever and transversely of the reciprocatory path of said feed means and embracing said pivotal first bearing member for pivotal and radial movement of said lever on said first bearing member, a linear third bearing member on a feed means remote portion of said lever in the form of a bearing surface extending and having lineally of said reciprocatory path a convex substantially arcuate form having its axis at the feed means connected end portion of said lever, a rectilinear fourth bearing member in the form of a bearing surface extending lineally of said reciprocatory path and having bearing engagement with said third bearing member radially of said lever and transversely of said reciprocatory path, and spring means operative on said lever radially of said lever and transversely of said reciprocatory path for maintaining said third and fourth bearing members in engagement.

5. In an intermittent strip feed mechanism, the combination of claim 4 and further characterized in that said third bearing member is disposed at the feed means remote end of said lever and that said first and second bearing members are disposed intermediate the lineal extent of said third and fourth bearing members.

6. In an intermittent strip feed mechanism, the combination of claim 1 and further characterized in that said first bearing means includes a bearing member establishing said pivotal axis and mounted for adjustment corresponding with the movement plane of said lever.

7. In an intermittent strip feed mechanism, the combination of claim 2 and further characterized in that said first bearing member is mounted for adjustment corresponding with the movement plane of said lever and transversely of said reciprocatory path.

8. In an intermittent strip feed mechanism thev combination of claim 4 and further characterized in that said first bearing member is mounted for adjustment corresponding with the movement plane of said lever and transversely of said reciprocatory path, 7 i

9. In an intermittent strip feed mechanism, the combination of claim 1 and further characterized in that said first bearing means includes a bearing member establishing said pivotal axis and mounted for adjustment corresponding with the movement plane of said lever both transversely and longitudinally of said reciprocatory path.

10. 111 an intermittent strip feed mechanism, the combination of claim 2 and further characterized in that said first bearing member is mounted for adjustment corresponding with the movement plane of said lever both transversely and longitudinally of said reciprocator path.

11. In an intermittent strip feed mechanism, the combination of claim 4 and further characterized in that said fourth bearing member is mounted for adjustment corresponding with the movement plane of said lever and longitudinally of said reciprocatory path and that said first bearing member is mounted on said fourth bearing'member for adjustment corresponding with the movement plane of said lever and transversely of said reciprocatory path. a

12. In; an intermittent strip feed mechanism, the combination of claim 4 and further characterized in that said third bearing member is disposed at the feed means remote end of said lever, that said first and second bearing members are disposed intermediate the lineal extent of said third and fourth bearing members, and that said first bearing member is mounted for adjustment in the plane of movement of said lever.

13. In an intermittent strip feed mechanism, the combination of claim 4 and further characterized in that said third and fourth bearing members are disposed at the feed means remote end of said lever, that said first and second bearing members are disposed intermediate the lineal extent of said third and fourth bearing members, that said fourth bearing member is mounted for adjustment corresponding with the movement plane of said lever and longitudinally of said reciprocatory path, and that said first bearing member is mounted on said fourth bearing member for adjustment corresponding Withthe movement plane of said lever, and transversely of said reciprocatory path.

14. In an intermittent strip feed mechanism, the combination of a toothed strip feed shuttle mounted for pivotal strip engaging and disengaging movement and for reciprocatory strip feed and return movement along its pivotal axis. an actuating member mounted for reciprocation longitudinally of said shuttle axis, a connection between said actuating member and shuttle for reciprocating said shuttle along said shuttle axis with reciprocation of said actuating member and comprising a bearing of helical character arranged aboutsaid shuttle axis and effecting relative movement between said actuating member and' shuttle longitudinally of said shuttle axis with angular movement of said shuttle on said shuttle axis; and means for reciprocating said actuatingmember and oscillating said shuttle in timed relation to effect intermittent feed of a feed perforated strip.

15. In an intermittent strip feed mechanism, the combination of a toothed strip feed shuttle mounted for pivotal strip engaging and disengaging movement and for reciprocatory strip feed and return movement along its pivotal axis, an actuating member mounted for reciprocation longitudinally of said shuttle axis, a connection between said actuating member and shuttle for reciprocating said shuttle along said shuttle axis with reciprocation of said actuating member and comprising a bearing of helical character arrangedabout said shuttle axis and efiecting relative movement between said actuating member and shuttle longitudinally of said shuttle axis with angular movement of said shuttle on said shuttle axis, and two coaxial rotatable cams angularly fixed with each other and respectively operative on said actuating member and shuttle for reciprocating said actuating member and oscillating said shuttle in timed relation to effect intermittent feed of a feed perforated strip.

16. In an intermittent strip feed mechanism, the combination of a toothed strip feed shuttle mounted for pivotal strip engaging and disengaging movement and for reciprocatory strip feed and return movement along its pivotal axis.

a lever. mounted for pivotal movementcorresponding with reciprocating movement of said shuttle along said shuttle axis, a connection betweens'ai d lever and shuttle for reciprocating said shuttle along said shuttle axis with oscillation of said lever and comprising a bearing-of helical character arranged about said shuttle axis and efiecting relative movement between said lever and shuttle longitudinally of said shuttle axis with angular-jmovement of. said shuttle on said shuttleaxis, two coaxial rotatable cams angularly fixed with each other and dis--- posed. onan axis intermediate the pivotal. axis of said: lever and said connection and extending transversely of said shuttleaxis and cneof said:

cams being operative on said'lever to oscillate the same, and a connection between the other of; said cams and said shuttle for oscillating said, shuttle in timed relation with oscillation' of said lever to intermittently feed a feed perforated strip and comprising a crank member angularly movable on and fixed. longitudinally of said bular strip feed shuttle having its bore engaged on said bearing memberfor reciprocatory strip feed and'v return movement and oscillatory strip perforation engaging and disengaging movement ofsaidshuttle along, and about said bearing member, a lever mounted for pivotal movement corresponding with reciprocating movement of said shuttle along said bearing member, a con-' nection between said lever and shuttle for re ciprocating said shuttle along said bearing member and comprising a connecting member pivotally connected with said lever and provided with a screw-threaded bore through which said shuttle passes and a screwthread on said shuttle threadedly engaged with said bore to effect relative movement between said connecting member and shuttle longitudinally of said bearing member with angular movement of said shuttle about said bearing member, two coaxial rotatable cams angularly fixed with each other and disposed on an axis intermediate the pivotal axis of said lever and said connection and extending transversely of said bearing member and one of said cams being operative on said lever to oscillate the same, and a connection between the other of said cams and said shuttle for oscillating said shuttle in timed relation with oscillation of said lever to intermittently feed a feed perforated strip and comprising an axially bored crank member angularly movable and fixed longitudinally of said shuttle axis and in the bore of which said shuttle is angularly fixed and slidable longitudinally of said bearing member.

18. In an intermittent strip feedmechanism, the combination of a toothed strip feed shuttle mounted for pivotal strip engaging and disengaging movement and for reciprocatory strip feed and return movement along its pivotal axis, a

lever mounted for pivotal movement correspond- I ing with reciprocating movement of said shuttle along said shuttle axis, a connection between said lever and shuttle for reciprocating said shuttle along said shuttle axis with oscillation of said lever and comprising a connecting member pivotally connected with said lever and a bearing between said connecting member and shuttle and of helical character arranged about said shuttle 1 4 axis andefiecting relative movement between said connecting member and shuttle longitudinally of saidshuttle axis with angular movement of said shuttle on said-shuttle axis, the pivotal mounting of said lever comprising afirst bearing means establishing the lever axis spacedtransversely from said shuttle axis and operative on said lever longitudinally of said shuttle axis to correspondingly pivotally confine said lever and to permit relati-ve' movement between said lever and leveraxis radially of said lever and transversely of said shuttle axis and a second bearing means operative on said lever radially' of said lever and trans-- versely of said shuttle axis to correspondingly confine saidlever and" to permit pivotal move:

ment of said lever on said lever axis and extend ing and having 'a form lineally' of said shuttle axis operative to efiect substantially rectilinear reciprocation of the shuttle connected portion of T mounted for pivotal strip engaging and; disengaging movement and for reciprocatory strip'v feed and return movement along its pivotal axis, a levermounted for pivotal movement corresponding with reciprocating movement of said shuttle along said shuttle axis, "a connection between said lever and shuttle for reciprocating said shuttle along said shuttle axis with oscillation of said lever and comprising a connecting member pivotally connected with said lever and a bearing between said connecting member and'shuttle and ofhelical character arranged about said shuttle axis and effecting relative movement between said connecting member and shuttle longitudinally of said. shuttle axis with angular movement of said shuttle on said shuttle axis, the pivotal mounting of said lever comprising a first bearing means establishing the lever axis spaced transversely from said shuttle axis and operative on said lever longitudinally of said shuttle axis to correspondingly pivotally confine said lever and to permit relative movement between said lever and lever axis radially of said lever and transversely of said shuttle axis and a second bearing means operative on said lever radially of said lever and transversely of said shuttle axis to correspondingly confine said lever and to permit pivotal movement of said lever on said lever axis and extending and having a form lineally of said shuttle axis operative to efiect substantially rectilinear reciprocation of the shuttle connected portion of said lever, two coaxial rotatable cams angularly fixed with each other and disposed on an axis intermediate said lever axis and said connection and extending transversely of said shuttle axis and one of said cams being operative on said lever to oscillate the same, and a connection between the other of said cams and said ing reciprocatory strip feed and return movement of said feed means with oscillation of this lever, means for oscillating said levers in timed opposite movement phase relation whereby the second of said levers acts as a counterbalance, and the pivotal mounting of said levers comprising a first bearing means establishing a pivotal axis spaced transversely from the reciprocatory path of said feed means and operative on said levers longitudinally of said reciprocatory path to correspondingly pivotally confine said levers and to permit relative movement between said levers and said pivotal axis radially of said levers and, transversely of said reciprocatory path and including adjustable means operative to adjust said pivotal axis radially of-said levers and transversely of said reciprocatory path and a second bearing means operative on said levers radially of said levers and transversely of said reciprocatory path to correspondingly confine said levers and to permit pivotal movement of said levers on said pivotal axis and operative in cooperation with said first bearing means to effect substantially rectilinear reciprocation of the feed means connected portion of said first lever and the corresponding portion of said second lever.

21. In an intermittent strip feed mechanism, th combination of claim and further characterized in'that said first bearing means includes a second adjustable means operative to adjust said pivotal axis longitudinally of said reciprocatory path.

22.-In an intermittent stri feed mechanism, the combination of toothed strip feed means, a lever mounted for pivotal movement and connected with said feed means for effecting reciprocatory strip feed and return movement of said feed means with oscillation of said lever, means for oscillating said lever, and bearing means operative on said lever remote from the pivotal axis thereof to confine the same normal to its plane of movement and comprising at least one longitudinally tensioned wire-like bearing member extending correspondingly with movement of said lever and having bearing engagement therewith.

23. In an intermittent strip feed mechanism, the combination of toothed strip feed means, a lever mounted for pivotal movement'and connected with said feed means for efiecting reciprocatory strip feed and return movement of said feed means with oscillation of said lever, means for oscillating said lever, and bearing means operative on said lever remote from the pivotal axis thereof to confine the same normal to its plane of movement and comprising two parallel longitudinally tensioned wire-like bearing members extending correspondingly with movement of said lever and between which said lever is disposed and having bearing engagement therewith and mounting means common to said bearing members and operative to position and tension the same.

ALBERT S. HOWELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 

